{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["subsidiaries", "title of person", "spouse", "cities of residence"], "input": "Polk Place was the home of 11th President of the United States  James K. Polk  and his wife Sarah Childress Polk on Vine Street in Nashville  Tennessee  which he purchased from his mentor Felix Grundy ."}
{"subsidiaries": [], "title of person": [], "spouse": [], "cities of residence": []}